Influence of aluminum powder on emissive spectra in rapid reaction of N-hexane and oxygen mixtures

Studies of the emission from rapid reaction of n-hexane and oxygen mixtures show that it mainly extends from 400 nm to the upper measured spectral limit of 830 nm. The spectra in this study consist of line, bands and the continuum emission. Bands of some intermediates produced in the reaction such as C2, CH, CH2O, CHO, OH, H2O and CO2 are identified under high-resolution spectroscopic measurements. According to the variations in radiation intensities with time of some important radicals or products, the authors discuss the effects of Al powder on the rapid reaction. Finally, the ignition mechanisms of n-hexane is speculated